Aerosol nozzle

Abstract

Provided is a simple-structured aerosol nozzle capable of mixing a plurality of contents uniformly and ejecting the same, and moreover leaving only a small amount of contents inside the flow passage after ejection. An aerosol nozzle 100 includes a nozzle lower part 120 that fits with a plurality of stems 103, and a nozzle upper part 110. At least one of an upper abutment surface 122 of the nozzle lower part 120 and a lower abutment surface 112 of the nozzle upper part 110 has a converging groove 126 that forms a plurality of converging passages 131 that connect openings of stem-communicated passages 123 and an opening of a mixing passage 111 when the nozzle lower part 120 and nozzle upper part 110 are fitted with each other.

The invention claimed is: 
     
       1. An aerosol nozzle, comprising a nozzle lower part that fits with a plurality of stems protruding from an aerosol container, and a nozzle upper part that fits with the nozzle lower part, wherein
 the nozzle lower part includes stem fitting parts that fit with the plurality of stems respectively, an upper abutment surface, and stem-communicated passages that open in the upper abutment surface and extend through the nozzle lower part from the stem fitting parts, 
 the nozzle upper part includes a lower abutment surface, and a mixing passage that opens in the lower abutment surface and extends upward, 
 at least one of the upper abutment surface and the lower abutment surface has a converging groove that connects openings of a plurality of the stem-communicated passages, 
 the converging groove forms a plurality of converging passages that connect openings of the stem-communicated passages and an opening of the mixing passage when the nozzle lower part and the nozzle upper part are fitted with each other, and 
 cross-sectional areas of each of the plurality of converging passages are configured to differ from each other or to vary along directions that the converging passages extend. 
 
     
     
       2. The aerosol nozzle according to  claim 1 , wherein the plurality of converging passages include a flow line other than a straight line connecting center lines of the stem-connected passages and a center line of the mixing passage. 
     
     
       3. The aerosol nozzle according to  claim 1 , wherein the plurality of converging passages include passages of different shapes. 
     
     
       4. The aerosol nozzle according to  claim 1 , wherein a mixing space that connects the plurality of converging passages and the mixing passage is formed in at least one of the lower abutment surface and the upper abutment surface. 
     
     
       5. The aerosol nozzle according to  claim 1 , wherein the nozzle upper part and the nozzle lower part are molded integrally and coupled together by a hinge part. 
     
     
       6. The aerosol nozzle according to  claim 1 , wherein said cross-sectional areas of each of the plurality of converging passages being configured to differ from each other includes a width of a first of said plurality of converging passages being larger than a second of said plurality of converging passages. 
     
     
       7. The aerosol nozzle according to  claim 1 , wherein said cross-sectional areas of each of the plurality of converging passages are configured to vary along directions that the converging passages extend includes that the cross-sectional areas of the converging grooves are reduced toward the mixing space such that the flow speed of passing contents is increased. 
     
     
       8. An aerosol nozzle, comprising a nozzle lower part that fits with a plurality of stems protruding from an aerosol container, and a nozzle upper part that fits with the nozzle lower part, wherein
 the nozzle lower part includes stem fitting parts that fit with the plurality of stems respectively, an upper abutment surface, and stem-communicated passages that open in the upper abutment surface and extend through the nozzle lower part from the stem fitting parts, 
 the nozzle upper part includes a lower abutment surface, and a mixing passage that opens in the lower abutment surface and extends upward, 
 at least one of the upper abutment surface and the lower abutment surface has a converging groove that connects openings of a plurality of the stem-communicated passages, 
 the converging groove forms a plurality of converging passages that connect openings of the stem-communicated passages and an opening of the mixing passage when the nozzle lower part and the nozzle upper part are fitted with each other, and 
 the nozzle upper part and the nozzle lower part are molded integrally and coupled together by a hinge part.